/Engine/Source/Runtime/Engine/Public/kDOP.h
Figures out whether the check even hits the root node's bounding volume. If it does, it recursively searches for a triangle to hit.
bool LineCheck ( [TkDOPLineCollisionCheck](API\Runtime\Engine\TkDOPLineCollisionCheck)< COLL_DATA_PROVIDER, KDOP_IDX_TYPE > & Check ) const